The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 29, 2022
Filed:
Mar. 28, 2019
Applicant:
Nippon Paper Industries Co., Ltd., Tokyo, JP;
Inventors:
Masato Takayama, Tokyo, JP;
Yoshihiro Aoki, Tokyo, JP;
Takanori Otsuhata, Tokyo, JP;
Takeo Izumiya, Tokyo, JP;
Hiroyuki Okumura, Tokyo, JP;
Tomonori Kawamata, Tokyo, JP;
Ryo Sotooka, Tokyo, JP;
Assignee:
NIPPON PAPER INDUSTRIES CO., LTD., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
D21H 11/20 (2006.01); D21H 15/02 (2006.01); C08B 11/12 (2006.01); D21H 17/67 (2006.01);
U.S. Cl.
CPC ...
D21H 11/20 (2013.01); C08B 11/12 (2013.01); D21H 15/02 (2013.01); D21H 17/67 (2013.01); D10B 2201/00 (2013.01); D10B 2401/16 (2013.01);
Abstract
Provided is an oxidized microfibrillated cellulose fiber having a Canada standard freeness of not less than 200 mL and an average fiber diameter of not less than 500 nm. Said fiber enhances paper strength when added to a paper.